Key Stage 1 Mathematics - Problems. Quiz 4 Q1  SWIMMING POOL Opening Times Monday Tuesday Wednesday Thursday Friday Saturday Sunday Open 8.30am 8.30am 6.30am 6.30am 5.30am 8.30am 8.30am Closed 9.30pm 9.00pm 7.30pm 7.30pm 9.00pm 5.30pm 5.30pm How many hours is the pool open on Tuesdays? 13 hours 12 hours and 30 minutes 14 hours 11 1/2 hours